<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:swes="http://www.opengis.net/swes/2.0" xmlns:sps="http://www.opengis.net/sps/2.0" targetNamespace="http://www.opengis.net/sps/2.0" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2.0.0">
  <annotation>
    <documentation>
      SPS is an OGC Standard.
      Copyright (c) 2010, 2011 Open Geospatial Consortium, Inc. All Rights Reserved. 
      To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
    </documentation>
  </annotation>
  <import namespace="http://www.opengis.net/gml/3.2" schemaLocation="http://schemas.opengis.net/gml/3.2.1/gml.xsd"/>
  <import namespace="http://www.opengis.net/swes/2.0" schemaLocation="http://schemas.opengis.net/swes/2.0/swes.xsd"/>
  <include schemaLocation="sps.xsd"/>
  <!-- ================================================= -->
  <element name="SensorOffering" type="sps:SensorOfferingType" substitutionGroup="swes:AbstractOffering">
    <annotation>
      <documentation>contains metadata about a sensor provided by the service</documentation>
    </annotation>
  </element>
  <complexType name="SensorOfferingType">
    <complexContent>
      <extension base="swes:AbstractOfferingType">
        <sequence>
          <element name="observableArea">
            <annotation>
              <documentation>the area that the sensor can observe</documentation>
            </annotation>
            <complexType>
              <sequence>
                <group ref="sps:PointOrPolygon"/>
              </sequence>
            </complexType>
          </element>
        </sequence>
      </extension>
    </complexContent>
  </complexType>
  <complexType name="SensorOfferingPropertyType">
    <sequence minOccurs="0">
      <element ref="sps:SensorOffering"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <element name="SPSContents" type="sps:SPSContentsType" substitutionGroup="swes:AbstractContents"/>
  <complexType name="SPSContentsType">
    <complexContent>
      <extension base="swes:AbstractContentsType">
        <sequence>
          <element name="minStatusTime" type="duration">
            <annotation>
              <documentation>duration in which the service provides status information about a task or tasking request after it has been finalized</documentation>
            </annotation>
          </element>
          <element name="supportedEncoding" type="anyURI" maxOccurs="unbounded">
            <annotation>
              <appinfo>
                <gml:targetElement>unknown</gml:targetElement>
              </appinfo>
              <documentation>encoding supported by the service that can be used to encode tasking parameter values</documentation>
            </annotation>
          </element>
        </sequence>
      </extension>
    </complexContent>
  </complexType>
  <complexType name="SPSContentsPropertyType">
    <sequence minOccurs="0">
      <element ref="sps:SPSContents"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
  </complexType>
  <!-- ================================================= -->
  <group name="PointOrPolygon">
    <annotation>
      <documentation>represents a choice between a point or a polygon</documentation>
    </annotation>
    <choice>
      <element name="byPoint">
        <complexType>
          <sequence>
            <element ref="gml:Point"/>
          </sequence>
        </complexType>
      </element>
      <element name="byPolygon">
        <complexType>
          <sequence>
            <element ref="gml:Polygon"/>
          </sequence>
        </complexType>
      </element>
    </choice>
  </group>
  <complexType name="PointOrPolygonPropertyType">
    <sequence minOccurs="0">
      <group ref="sps:PointOrPolygon"/>
    </sequence>
    <attributeGroup ref="gml:AssociationAttributeGroup"/>
    <attribute name="unionSemantics" type="sps:PointOrPolygonUnionSemantics"/>
  </complexType>
  <simpleType name="PointOrPolygonUnionSemantics">
    <restriction base="string">
      <enumeration value="byPoint"/>
      <enumeration value="byPolygon"/>
    </restriction>
  </simpleType>
</schema>
